Campers can each week choose an optional track, like lacrosse or mosaics, and spend most of their time in that activity for no additional cost.

But during the final week of camp, for an extra $150, campers can participate in Circus of the Kids, where professional performers will teach them most any activity under the tent — juggling, fire-breathing, trapeze acts. Then the campers will perform in a show at the end of the week. (Take a deep breath, parents: There is no high wire act.)

Kaiserman JCC’s executive director, Beth Segal, said the organization decided to bring the circus to town after hearing of its success at other camps. She said the specialty programming provides parents better flexibility to figure out which weeks they want to send their children.

“Not everyone wants to commit to an eight-week program,” Segal said. “But they can fit a week or two in between their other summer obligations” and decide based on their interests, because the eight weeks no longer all look the same. — Eric Berger